The cause of vibration on the turbogenerator stator end winding is analyzed, and the meaning of natural frequency test and vibration measurement is discussed.
本文分析了引起汽轮发电机定子绕组端部振动的原因，以及固有频率试验和振动测量的意义。
Meanwhile, the modal analysis is used to test the detection arm's natural frequency and structural vibration modes, which provides a reference for the stability test of the bridge inspection vehicle.
同时对检测臂进行了模态分析，测出了其固有频率和结构振型，为检测车工作时的稳定性要求提供了参考。
This paper analyzed the phenomena in satellite vibration test that natural frequency decreases as excitation level increases.
针对卫星振动实验中的频率漂移现象进行了分析。
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